Roller-machine for forming round can-bodies



No. 606,355;- Patented my 5, |898.l

H. C. GAMPEN.v

ROLLER MACHINE FOR FORMING ROUND CAN BODIES. l

(Applicatog flled Feb. 19, 1898.)

(No Model.)

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@M2M/. 7% f5. Mmm,

UNITED fSTATRs PATENT union.

IIENRYo. oAiv'IPEN, oF BALTIMORE, MARYLAND.

ROLLER-MACHINE FOR FORMAI'NG ROUND CAN-BODIES.

SPECIFICATION forming part of Letters Patent No. 606,855, dated July 5,189s. Appnmion mea February 19, 1898. serai No'. 670,941. (No model.)

tion.

This invention relates to a machine for forming the bodies for roundcans that are used for preserving fruit, vegetables, and oysters.

The obj ect of the invention is to provide improved rollers forconverting the flat bodyblanks into cylindric shapesv that will havenumerous narrow flat sides and angles.

The invention is illustrated in the accompanying drawings, in which-Figure 1 is asideview of the roller-machine for producing thecan-bodies. Fig. 2 is avertical cross-sectionof the machine. Fig. 3 is across-section, on a larger scale, of one of the rollers. Fig. 4 is aperspective View of a part of a cylindric can-body having numerous flatsides and angles and shows the product turned out by the improvedmachine.

IIeretofore the bodies of ordinary round cans have been converted from ahat tin-plate blank into a cylindric shape by the action of threeplain-surfaced rollers, all mounted in bearings. Y

The object of the present invention is to provide means whereby rollerswill convert a flat blank into a shape that will be genderallycylindric, as indicated in Fig. 4:, but which will have numerous narrowfiat sides cl and angles e.

The machine has two end frames A and two ordinary plain-surfaced rollersf h, each journaled in boxes or bearings t in said frames.

The plain roller f is geared by pinions j with' a third roller G, whichwill now be described. This roller has fiat faces d all around it, eachface extending longitudinally from one end of the roller to the other.Each flat face is at an angle with respect to the fiat faces at itsadjoining sides. This roller also has longitudinal grooves e', onegroove separating every two of the flat facesthat is to'say, the groovesand fiat faces alternate, as shown in Fig. 3. A crank k is fixed to thejournal of one of the geared rollers, and screws Z are so arranged withrespect to the end frames A and the bearings I', in which the rollersare journaled, that the position of at least two of the rollers may bechanged or adjustedto produce the proper grip effect on the can-bodyblank as it passes through, and also to produce the desired cylindriccurvature on the blank.

In operation a iiat blank will enter between the two rollers f G, asindicated by the dart lm, and in its curved form will discharge over theroller h, as indicated by the dart n. The fiat faces d of the roller Gare so applied to the blank as to produce the narrow flat sides d on thecan-body, and the grooves e on the roller take on that side of the blankwhich becomes the inner surface of the cylinder and at the points wherethe angles e are formed. The grooves e' on the roller avoid cutting orbreaking the tin-plate blank and also avoid producing an excessivecurvature effect on the blank, which would coil the blank more than itought to be.

A can-body formed by this machine will have greater stiffness andstrength and will resist exterior blows or pressure.

Having thus described my invention, what I claim is- 1. A machine forforming round canbodies having in combination, two plain-surfaced roundrollers; and a third roller provided with numerous fiat faces all aroundit, each face extending longitudinally of the roller, whereby yatin-plate flat blank may be run through said rollers and converted intoa cylindric shape having numerous narrow at sides.

2. Amachine for forming round can-bodies having in combination, twoplain-surfaced round rollers; and a third roller provided.

